Java XML Null Pointer Exception -

Java XML Null Pointer Exception -

i have big xml file (around 29 gb)where every other alternate line xml around 500 attributes. reading file sequentially , sending out line unmarshaller creates object out of it.

i got next exception after time.

java.lang.nullpointerexception @ com.sun.xml.internal.stream.entity$scannedentity.close(entity.java:439)

the next accepts line , unmarshalls it.

scurrentline = br.readline(); iddetails = idunmarshal.idunmarshall(scurrentline); idobjectlist.add(iddetails);

this total stack trace

java.lang.nullpointerexception @ com.sun.xml.internal.stream.entity$scannedentity.close(entity.java:439) @ com.sun.org.apache.xerces.internal.impl.xmlentitymanager.endentity(xmlentitymanager.java:1404) @ com.sun.org.apache.xerces.internal.impl.xmldocumentscannerimpl.next(xmldocumentscannerimpl.java:647) @ com.sun.org.apache.xerces.internal.impl.xmlnsdocumentscannerimpl.next(xmlnsdocumentscannerimpl.java:140) @ com.sun.org.apache.xerces.internal.impl.xmldocumentfragmentscannerimpl.scandocument(xmldocumentfragmentscannerimpl.java:511) @ com.sun.org.apache.xerces.internal.parsers.xml11configuration.parse(xml11configuration.java:808) @ com.sun.org.apache.xerces.internal.parsers.xml11configuration.parse(xml11configuration.java:737) @ com.sun.org.apache.xerces.internal.parsers.xmlparser.parse(xmlparser.java:119) @ com.sun.org.apache.xerces.internal.parsers.abstractsaxparser.parse(abstractsaxparser.java:1205) @ com.sun.org.apache.xerces.internal.jaxp.saxparserimpl$jaxpsaxparser.parse(saxparserimpl.java:522) @ com.sun.xml.bind.v2.runtime.unmarshaller.unmarshallerimpl.unmarshal0(unmarshallerimpl.java:211) @ com.sun.xml.bind.v2.runtime.unmarshaller.unmarshallerimpl.unmarshal(unmarshallerimpl.java:184) @ javax.xml.bind.helpers.abstractunmarshallerimpl.unmarshal(abstractunmarshallerimpl.java:137) @ javax.xml.bind.helpers.abstractunmarshallerimpl.unmarshal(abstractunmarshallerimpl.java:184)

have considered may reading line doesn't exist .readline(); phone call , storing within null value beingness used tdunmarshall method , throwing error?

java xml file jaxb unmarshalling